EP 0477081 A2 19920325 - Method for producing a resin pipe for use as the inner lining of existing pipes.
Title (en)
Method for producing a resin pipe for use as the inner lining of existing pipes.
Title (de)
Verfahren zur Herstellung eines Kunsstoffrohres zur Verwendung als Innenauskleidung von bestehenden Rohrleitungen.
Title (fr)
Procédé de production d'un tuyau en résine thermoplastique à utliser comme revêtement des tuyaux existants.
Publication
Application
Priority
JP 24969890 A 19900918
Abstract (en)
A polyvinyl chloride resin pipe (1) is produced for use as an inner lining for repairing or reinforcing sewerage pipes or other existing pipes. An airtight packing (10) is disposed in the resin pipe and between a traction device (8) and a reheating device (9), with the traction device pulling forwards the resin pipe which has been extruded from an extruder (2). An internal pressure is imparted to the resin pipe by introducing compressed air from a forward end thereof so that the resin pipe is depressed flat while being reeled up on a drum (D) in such a state that an internal space is maintained without failure within the resin pipe. In use, a heating medium is fed into the resin pipe from its end so that it rapidly becomes soft uniform as a whole, whereby a defect-free inner lining is formed in the existing pipes. <IMAGE>
IPC 1-7
IPC 8 full level
B65H 54/02 (2006.01); B29C 31/00 (2006.01); B29C 48/09 (2019.01); B29C 48/355 (2019.01); B29C 53/32 (2006.01); B29C 63/34 (2006.01); F16L 1/00 (2006.01); F16L 55/165 (2006.01); B29C 48/15 (2019.01); B29L 23/00 (2006.01)
CPC (source: EP KR US)
B29C 31/002 (2013.01 - EP US); B29C 48/09 (2019.01 - EP US); B29C 48/355 (2019.01 - EP US); B29C 53/32 (2013.01 - EP US); B29C 63/34 (2013.01 - EP KR US); F16L 55/1656 (2013.01 - EP US); B29C 48/0019 (2019.01 - EP US); B29C 48/15 (2019.01 - EP US); B29K 2027/06 (2013.01 - EP US); B29L 2023/006 (2013.01 - EP US); B29L 2023/22 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0477081 A2 19920325; EP 0477081 A3 19920520; EP 0477081 B1 19960410; DE 69118632 D1 19960515; DE 69118632 T2 19960926; JP H04128024 A 19920428; JP H089192 B2 19960131; KR 0181511 B1 19990515; KR 920006096 A 19920427; US 5160476 A 19921103
DOCDB simple family (application)
EP 91402455 A 19910916; DE 69118632 T 19910916; JP 24969890 A 19900918; KR 910016301 A 19910918; US 75768191 A 19910911